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205 packages found
Function triggers error if a given index, array, or 'howMany' items request is not valid
Function triggers error if array is too short to return a requested number of adjacent items beginning at a particular index
Validation package for the state object in React
Find the dependencies of an NPM package
Type checking, auto hotfixing and error handling.
Function takes array and triggers error if not all items in it are arrays
Runtime type checking with "value as type" model definition in Javascript.
The object validator for TypeScript.
- scheme
- object
- typesafe
- typescript
- firebase
- type
- types
- check
- checking
- validator
- validate
- validation
- utility
- util
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Guard against null and undefined values
A utility for type checking elements on an array. The library is inspired from chai framework supporting chaining to combine multiple operations.
Simplistic and minimal runtime type checking system for Node.js applications
Function argument validation for humans
- type
- types
- check
- checking
- guard
- guards
- assert
- assertion
- predicate
- predicates
- is
- validate
- validation
- utility
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Checking authorization helper
Fully validate an email address's syntactic correctness and existence as a real email address that will not bounce. Basic RFC validation also available.
Object template declaration and runtime type checking
Fast, extensive and customizable type checking library
A simple library for detecting if a user is using a mobile browser
Lightweight replacement for the ow validation library meant for browser usage.
The package contains helper methods for checking type of parameters in Node.js projects